Giant Shield Lichen

Species recognized by United Kingdom Species List, North Atlantic Species List, Slovakia Species List, Slovenia Species List, Sweden Species List, Switzerland Species List, Turkey Species List, Delete- old US Species List, Taiwan Species List, Papua New Guinea Species List, Poland Species List, Portugal Species List, Romania Species List, Ireland Species List, Italy Species List, Lithuania Species List, Mexico Species List, France Species List, Hungary Species List, Finland Species List, Estonia Species List, Georgia Species List, Germany Species List, Belarus Species List, Bhutan Species List, Croatia Species List, Austria Species List, Australia Species List, India Species List, Norway Species List, Barcode of Life Data Systems, Canada Species List, China Species List, Japan Species List, Philippines Species List, Russia Species List, and Wikidata

Recognized by iNaturalist

Species recognized by GBIF classification

Recognized by USDA PLANTS images

Recognized by BioImages, the virtual fieldguide, UK

Species recognized by Wikimedia Commons

Synonym according to USDA PLANTS images

Doubtful according to GBIF classification